EP 0027274 B1 19840815 - CONTINUOUS BULK POLYMERIZATION PROCESS FOR PREPARING A COPOLYMER OF AN AROMATIC VINYL MONOMER AND MALEIC ANHYDRIDE
Title (en)
CONTINUOUS BULK POLYMERIZATION PROCESS FOR PREPARING A COPOLYMER OF AN AROMATIC VINYL MONOMER AND MALEIC ANHYDRIDE
Publication
Application
Priority
JP 13255379 A 19791015
Abstract (en)
[origin: EP0027274A2] In a continuous bulk polymerization process of a styrene type copolymer which is a copolymer consisting of 60 to 95% by weight of an aromatic vinyl monomer and 40 to 5% by weight of maleic anhydride, a continuous bulk polymerization process of a styrene type copolymer characterized in that at the first stage, continuous bulk polymerization is carried out using a vertical agitation system polymerization apparatus to a conversion of 20 to 60% by continuously feeding a mixed monomer of the aromatic vinyl monomer and maleic anhydride having a feed composition ratio corresponding to the copolymer, and at the second stage, and at the third stage, if necessary, continuous bulk polymerization is carried out to a conversion of 60 to 95% using a horizontal apparatus for processing highly viscous substances, equipped with one or two rotary shafts having agitation blade frames or agitation blades impaled thereon, by continuously and dividedly feeding maleic anhydride from plural feed ports disposed on said apparatus for processing highly viscous substances.
IPC 1-7
IPC 8 full level
B01J 19/18 (2006.01); B01J 19/20 (2006.01); C08F 2/00 (2006.01); C08F 2/02 (2006.01); C08F 212/00 (2006.01); C08F 212/08 (2006.01); C08F 220/04 (2006.01); C08F 222/06 (2006.01)
CPC (source: EP US)
B01J 19/18 (2013.01 - EP US); B01J 19/20 (2013.01 - EP US); C08F 212/00 (2013.01 - EP US); B01J 2219/00074 (2013.01 - EP US); B01J 2219/00186 (2013.01 - EP US); B01J 2219/182 (2013.01 - EP US); B01J 2219/185 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0027274 A2 19810422; EP 0027274 A3 19810506; EP 0027274 B1 19840815; DE 3068962 D1 19840920; JP S5655410 A 19810516; JP S6234047 B2 19870724; US 4328327 A 19820504
DOCDB simple family (application)
EP 80106225 A 19801013; DE 3068962 T 19801013; JP 13255379 A 19791015; US 19670580 A 19801014